<!DOCTYPE HTML>
<title>Canvas test: 2d.imageData.create.negative</title>
<!--[if IE]><script src="../excanvas/excanvas.js"></script><![endif]-->
<script src="../tests.js"></script>
<link rel="stylesheet" href="../tests.css">
<body class="framed show_output">
<h1>
<a href="2d.imageData.create.negative.html" target="_parent">2d.&#8203;imageData.&#8203;create.&#8203;negative</a>
</h1>
<p><a href="#" id="show_output" onclick="document.body.className += ' show_output'; return false">[show output]</a>
<p class="output">Actual output:</p>
<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>

<ul id="d"></ul>
<script>
_addTest(function(canvas, ctx) {

var imgdata1 = ctx.createImageData(10, 20);
var imgdata2 = ctx.createImageData(-10, 20);
var imgdata3 = ctx.createImageData(10, -20);
var imgdata4 = ctx.createImageData(-10, -20);
_assertEqual(imgdata1.data.length, imgdata2.data.length, "imgdata1.data.length", "imgdata2.data.length");
_assertEqual(imgdata2.data.length, imgdata3.data.length, "imgdata2.data.length", "imgdata3.data.length");
_assertEqual(imgdata3.data.length, imgdata4.data.length, "imgdata3.data.length", "imgdata4.data.length");


});
</script>

